mo Meaning, Definition & Usage

  1. noun an indefinitely short time
    moment; bit; minute; second.
    • wait just a moment
    • in a mo
    • it only takes a minute
    • in just a bit
  2. noun a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel
    atomic number 42; molybdenum.
  3. noun a midwestern state in central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union
    Show Me State; Missouri.

WordNet

Mo adjective adverb , & noun
Etymology
AS. ma. See More.
Definitions
  1. More; -- usually, more in number. Obs.
    An hundred thousand mo. Chaucer.
    Likely to find mo to commend than to imitate it. Fuller.

Webster 1913